The good news is that following a RE-REPAIR, my D7000 is now focusing perfectly. It is spot-on with all lenses, just as my D300s is (and D700 was). To remind, it was backfocusing so was sent to Nikon's UK agent, Johnsons Photopia, as they are the only agent who appear on the pre-payment label, if you don't want to pay the postage to send your camera to Nikon (they have several agents in the UK). Unfortunately, when the camera came back, it was front-focusing horribly - really quite ridiculously. I thus paid to send it in to Nikon at Richmond and it has returned like a new camera.